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Lumo by Proton

Lumo by Proton

Privacy-first AI assistant with confidential conversations

Website proton.me
Overview

What it is

Your data, your rules Proton provides easy-to-use encrypted email, calendar, file storage, VPN, and much more, built on the principle of your data, your rules.

Intent

I need it when

Ideate and brainstorm on sensitive or confidential business topics securely

Lumo's end-to-end encryption and zero-access architecture mean conversations remain private even from Proton. This enables professionals, lawyers, doctors, and business leaders to use AI for strategic planning, client work, and sensitive analysis without risk of data exposure or unauthorized use.

Access AI assistance from a company aligned with privacy values and transparent practices

Proton is founded by scientists, operates as a non-profit-backed entity, publishes open-source code, and undergoes independent security audits. Users seeking AI from an organization with demonstrated commitment to privacy rights and transparency can trust Lumo's privacy-first design.

Use AI tools within a trusted, privacy-centric ecosystem without switching platforms

Lumo integrates into the Proton ecosystem alongside Mail, Drive, Docs, and other services. Users with existing Proton accounts can access AI assistance as part of Proton Unlimited, maintaining a unified privacy-by-default experience across communication, storage, and productivity tools.

Get AI assistance while maintaining complete privacy and confidentiality of conversations

Lumo is a privacy-first AI assistant where every conversation is confidential and end-to-end encrypted. Unlike mainstream AI services, Proton ensures conversations cannot be used for model training or accessed by third parties, allowing users to ideate and ask sensitive questions without exposure.

Drop

Not a fit when

  • User requires AI training on their data or accepts data monetization for service cost reduction
  • User needs real-time collaboration with non-Proton ecosystem tools without integration
  • User operates in jurisdiction requiring AI model transparency that conflicts with privacy-first design
  • User requires advanced AI features like image generation or code execution beyond conversational assistance
  • User needs standalone AI service without commitment to broader Proton privacy ecosystem
Commercials

Pricing

Freemium with paid tier included in Proton Unlimited subscription View pricing